Automatic windmill



(No Model.; 2 Sheets$heet 1v G. E. KNOWLTON. AUTOMATIC WINDMILL.

No. 589,530 Patented Sept. 7, 1897.

UNITED STAT S GERRY E. KNOWLTON, OF BOONE, IOIVA.

PATENT union,

AUTOMATiC' WINDMILL.

SPECIFICATION forming part of Letters Patent No. 589,530, datedSeptember 7, 1897.

Application filed January 16, 1897. derial No. 619,500. (No model.)

To aZl whom it may concern.-

Be it known that I, GERRY E. KNOWLTON, a citizen of the U11 ited.States, residing at Boone, in the county of Boone and State of Iowa,have invented certain new and useful Improvements in AutomaticWindmills; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention has relation to improvements in windmills; and the objectis to provide a simple, cheap, and durable device of this class.

To this end the novelty consists in the construction, combination, andarrangement of the same, as will be hereinafter more fully described,and particularly pointed out in the claims.

In the accompanying drawings the same reference-numerals indicate thesame parts of the invention.

Figure 1 is a perspective view of a windmill embodying my invention.Fig. 2 is a side elevation of the same. Fig. 3 is an enlarged plan viewof one of the arms. Fig. 4. is a detail showing the sail open, and Fig.5 is a similar view showing the sail closed.

1 represents a suitable tower or standard, in which is journaled thehorizontal shaft 2, formed with a central integral crank 3, from whichthe usual reciprocating motion may be communicated to a pump. or othermachine adapted to be operated by a wind-motor of this class. In someinstances I may dispense with the crank 3 and substitute aband or cogwheel, from which a belt or shafting may communicate motion to anysuitable machine.

l and 5 represent disks secured to said shaft on each side of thestandard 1, and to each pair of disks are secured the inner ends 6 7 ofthe radial parallel arms 8 8 of aseries of rectangular frames 9 9.

The arms 8 8 of each frame 9 extend radially outward and parallel witheach other to the elbow 10, where they are turned off in the same planeat an obtuse angle to form the bars 12 12, which are joined at theirouter ends by an integral transverse brace 13.

14 represents a rectangular frame, the side pieces 15 15 of which arepivoted to the arms 8 S at the elbows 1O 10 by the bolts 16 16 in such amanner that the integral cross-brace 17 of the frame 14 limits the swingof the frame both in opening and closing.

Referring to Fig. 5, 18 represents the rectangular sail, which may be ofany suitable fabric, secured along its upper edge to the transversebrace 13 on the outer arms of the radial frame 9 and along its parallellower edge to the transverse brace 15) of the hinged frame 14, alsoalong the inner edge of brace 1'7 of the frame 14. I11 this view thesail is shown closed to offer the least resistance to the wind, and itwill be observed that the cross-brace 17 of the frame 1% rests a ainstthe outerends of the arms 8 8 at a point just inside of the elbows 10,which limits the closing movement of the frame 14.

In Fig. 4-, in which the sail is shown open, it will be noticed that theopen movement of the frame 14 is limited by the cross-brace l7, restingagainst the inner ends of the bars 12 12, just outside of the elbows 10,and I consider this manner of limiting the movement of the frame 1% avery important feature, as

it takes the strain off the canvas or other fabric of which the sail iscom posed and also prevents all noise incident to the outer end of theframe 14 striking against the arms 8 8 when the machine is in operation.

In practice I provide my mill with the usual vane, which serves to keepit head to the wind, the upper end of the standard in which the shaft 2is journaled revolving about on a base for that purpose.

Although I have specifically described the construction and relativearrangement of the several elements of my invention, I do not desire tobe confined to the same, as such changes or modifications may be made asclearly fall within the scope of my invention without departing from thespirit thereof.

Having thus fully described my invention, what I claim as new anduseful, and desire to secure by Letters Patent of the United States, is-

1. Awindmill comprising a horizontal shaft, parallel disks fixed on saidshaft, a frame 9 having its parallel arms 8 S secured to said disks, theouter ends of said arms being connected by a transverse brace 13, incombination with the rectangular frame ll hinged to said frame 9 by thebolts 10, 16, and the sail fabric 18 connected. to said transverse bracefabric 18 connected along its upper edge to the brace 13, and along" itslower edge to the free end of theframe 14, substantially as shown anddescribed.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

GERRY E. KNOWLTON.

\Vitnesses:

W. H. CROOKS, J. V. DURANT.

